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Dual Cross-Linked Stimuli-Responsive Alginate-BasednHydrogels 双交联刺激响应藻酸盐基水凝胶

Figshare Pub Date : 1753-01-01 DOI: 10.1021/acs.biomac.3c01201.s001

Michel Habib (18072656), Steve Berthalon (18072659), Laurent Leclercq (1513915), Audrey Tourrette (18072662), Tahmer Sharkawi (4163182), Sebastien Blanquer (11477021)

{"title":"Dual Cross-Linked Stimuli-Responsive Alginate-BasednHydrogels","authors":"Michel Habib (18072656), Steve Berthalon (18072659), Laurent Leclercq (1513915), Audrey Tourrette (18072662), Tahmer Sharkawi (4163182), Sebastien Blanquer (11477021)","doi":"10.1021/acs.biomac.3c01201.s001","DOIUrl":"https://doi.org/10.1021/acs.biomac.3c01201.s001","url":null,"abstract":"Sodiumnalginate with different molecular weights (55, 170, andn320 kg mol–1) were chemically modified by graftingnmethacrylic moieties onto the hydroxyl groups of the alginate backbone.nThe methacrylation was optimized to obtain different degrees of modification.nChemically cross-linked hydrogels were obtained following UV-lightnirradiation in the presence of a photoinitiator. The swelling behaviornand the mechanical properties were observed to depend on both thendegree of methacrylation and the alginate molecular weight. Due tonthe chain entanglement present in high-viscosity sodium alginate,nlower degrees of modification were required to tune the hydrogel properties.nMoreover, in the presence of Ca2+, secondary cross-linkingnwas introduced by the coordination of the alginate guluronate moietiesnwith the Ca2+ ions. The addition of this secondary cross-linkingncaused fast volume shrinkage and a reinforcement of the mechanicalnproperties. The secondary cross-linking was reversible, and the hydrogelsnregained their original shape for at least three cycles. Additionally,nthe dual cross-linked network can be used to induce adhesion betweennhydrogels and serve as a building block for self-folding actuators.","PeriodicalId":523772,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1753-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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